Changes between Version 5 and Version 6 of WARPLab/Porting

Timestamp:

May 19, 2013, 9:02:26 PM (11 years ago)

Author:

murphpo

Comment:

--

WARPLab/Porting

@@ -84 +84 @@
 
 ----
-'''Writing Samples''': WARPLab 7 enables setting the same RF and baseband parameters as previous versions. However the syntax for sending commands to nodes has changed. The new syntax allows the same command to be sent to multiple nodes in one line. Each node can be assigned the same parameter value, or multiple values (one per node) can be passed as an array argument. The example below shows equivalent code for setting a few parameters for two nodes.
+'''Writing Samples''': Vectors of samples are constructed in MATLAB and written to buffers assigned to specific RF interfaces on the WARP nodes. In WARPLab 7 the buffer selection is parametric, simplifying the processing of iterating over nodes and interfaces, switching interfaces programmatically, etc. The example below illustrates how different waveforms can be written to multiple interfaces in one line. For complete documentation of the {{{write_iq}}} command, refer to the [wiki:../Reference/Baseband/Buffers#write_iq command documentation].
 
 {{{#!html
@@ -116 +116 @@
 %WARPLab 7
 
-%Time vector (assumes 40MHz sampling rate)
-t = (1/40e6) .* [0 : 2^14-1];
+%Time column vector (assumes 40MHz sampling rate)
+t = (1/40e6) .* [0 : 2^14-1].';
 
 %Generate a 1MHz sinusoid
@@ -135 +135 @@
 }}}
 
-
+----
+'''Tx/Rx Cycle''': The basic flow of a Tx/Rx cycle in WARPLab 7 is unchanged:
+ * Write samples to Tx buffers (see above)
+ * Enable Tx radios and buffers
+ * Enable Rx radios and buffers
+ * Send trigger to Tx and Rx nodes
+ * Disable Tx/Rx radios and buffers
+ * Retrieve captured samples from Rx buffers (see below)
+
+The code below illustrates the updated syntax for en/disabling radios and buffers and sending triggers.
+
+{{{#!html
+<table border=1 width=600><tr valign=top><td width=50% align=left>
+}}}
+
+{{{
+%WARPLab 6
+
+%Enable the RF transceivers
+warplab_sendCmd(udp_node1, RADIO2_TXEN, packetNum);
+warplab_sendCmd(udp_node1, RADIO3_TXEN, packetNum);
+warplab_sendCmd(udp_node2, RADIO2_RXEN, packetNum);
+warplab_sendCmd(udp_node2, RADIO3_RXEN, packetNum);
+
+%Enable the Tx/Rx buffers
+warplab_sendCmd(udp_node1, RADIO2TXBUFF_TXEN, packetNum);
+warplab_sendCmd(udp_node1, RADIO3TXBUFF_TXEN, packetNum);
+warplab_sendCmd(udp_node2, RADIO2RXBUFF_RXEN, packetNum);
+warplab_sendCmd(udp_node2, RADIO3RXBUFF_RXEN, packetNum);
+
+%Prepare nodes for trigger reception
+warplab_sendCmd(udp_node1, TX_START, packetNum);
+warplab_sendCmd(udp_node2, RX_START, packetNum);
+
+% Send the trigger
+warplab_sendSync(udp_Sync);
+
+%Disable the RF transceivers
+warplab_sendCmd(udp_node1, RADIO2_TXDIS, packetNum);
+warplab_sendCmd(udp_node1, RADIO3_TXDIS, packetNum);
+warplab_sendCmd(udp_node2, RADIO2_RXDIS, packetNum);
+warplab_sendCmd(udp_node2, RADIO3_RXDIS, packetNum);
+
+%Disable the Tx/Rx buffers
+warplab_sendCmd(udp_node1, RADIO2TXBUFF_TXDIS, packetNum);
+warplab_sendCmd(udp_node1, RADIO3TXBUFF_TXDIS, packetNum);
+warplab_sendCmd(udp_node2, RADIO2RXBUFF_RXDIS, packetNum);
+warplab_sendCmd(udp_node2, RADIO3RXBUFF_RXDIS, packetNum);
+
+
+}}}
+
+{{{#!html
+</td><td width=50% align=left>
+}}}
+
+{{{
+%WARPLab 7
+
+%Enable the RF transceivers
+wl_interfaceCmd(nodes(1), [RFA RFB], 'tx_en');
+wl_interfaceCmd(nodes(2), [RFA RFB], 'rx_en');
+
+%Enable the sample buffers
+wl_basebandCmd(nodes(1), [RFA RFB], 'tx_buff_en');
+wl_basebandCmd(nodes(2), [RFA RFB], 'rx_buff_en');
+
+%Send the broadcast trigger
+eth_trig.send();
+
+%Disable the transceivers and buffers
+wl_basebandCmd(nodes, 'RF_ALL', 'tx_rx_buff_dis');
+wl_interfaceCmd(nodes, 'RF_ALL', 'tx_rx_dis');
+
+%Retrieve the IQ and RSSI samples from the Rx node
+rx_IQ = wl_basebandCmd(nodes(2), [RFA RFB], 'read_IQ', 0, 2^14);
+rx_RSSI = wl_basebandCmd(nodes(2), [RFA RFB], 'read_RSSI', 0, 2^12);
+}}}
+
+{{{#!html
+</td></tr></table>
+}}}
+
+
+----
+'''Reading Samples'': WARPLab 7 simplifies the process for reading samples from multiple nodes and multiple buffers. The example below illustrates reading IQ and RSSI samples from two interfaces (RFA and RFB) on one node.
+
+{{{#!html
+<table border=1 width=600><tr valign=top><td width=50% align=left>
+}}}
+
+{{{
+%WARPLab 6
+
+%Retrieve and format the IQ samples from RFA and RFB
+[Node2_Radio2_RawRxData] = warplab_readSMRO(udp_node2, RADIO2_RXDATA, 2^14);
+[Node2_Radio2_RxData] = warplab_processRawRxData(Node2_Radio2_RawRxData);
+[Node2_Radio3_RawRxData] = warplab_readSMRO(udp_node2, RADIO3_RXDATA, 2^14);
+[Node2_Radio3_RxData] = warplab_processRawRxData(Node2_Radio3_RawRxData);
+
+%Retrieve and format the RSSI samples from RFA and RFB
+[Node2_Radio2_RawRSSIData] = warplab_readSMRO(udp_node2, RADIO2_RSSIDATA, 2^12);
+[Node2_Radio2_RSSIData] = warplab_processRawRSSIData(Node2_Radio2_RawRSSIData);
+[Node2_Radio3_RawRSSIData] = warplab_readSMRO(udp_node2, RADIO3_RSSIDATA, 2^12);
+[Node2_Radio3_RSSIData] = warplab_processRawRSSIData(Node2_Radio3_RawRSSIData);
+
+}}}
+
+{{{#!html
+</td><td width=50% align=left>
+}}}
+
+{{{
+%WARPLab 7
+
+%Retrieve the IQ and RSSI samples from both interfaces on the Rx node
+rx_IQ = wl_basebandCmd(nodes(2), [RFA RFB], 'read_IQ', 0, 2^14);
+rx_RSSI = wl_basebandCmd(nodes(2), [RFA RFB], 'read_RSSI', 0, 2^12);
+}}}
+
+{{{#!html
+</td></tr></table>
+}}}
+
+